Question

encontre as raizes das equaçoes a) 4c²-4x+1=0 b)x² -4x-12=0
c) x²+6x+9=0
d)3x²+4x+2=0
e)y²-16y+64=0
preciso dessas contas inteira

Answer 1

a) 4x²-4x+1=0
(2x-1)²=0
2x-1=0
2x=1
x=1/2
S={1/2}
b)x²-4x-12=0
∆=16+48
∆=64
x=(-4±√64)/2
x=-2±4
x=-6 x=2
S={-6,2}
c)x²-6x+9=0
(x-3)²=0
x-3=0
x=3
S={3}
d)3x²+4x+2=0
∆ negativo
S=∅
e)y²-16y+4=0
(y-8)²=0
y-8=0
y=8
S={8}